Patent US4132425A successfully refreshed from Google Patents.
US4132425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-wheel in-line roller skates
Assignee: DUENGEMITTEL-TECHNIK AG
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Filing: 1976-06-28
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Granted: 1979-01-02
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Expires: 1996-06-28
Abstract
Abstract A two wheel roller skate with at least one steerable wheel (4) mounted on a yoke (5) which is pivotally connected to a steering element (6) mounted on the frame (1) of the skate to pivot about a tilting axis. The yoke (5) is also pivotally connected to the frame (1) by a joint (14). The steering axis (11) of the wheel (4) is preferably perpendicular to the ground and the angle alpha between the tilting axis and the ground is less than 90°.
Inventors
- 👤 Aladar Lehner
- 👤 Istvan Varga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:57
CPC Classifications
A; A63; A63C; A63C17/00; A63C17/04; A63C17/06; A63C17/061; A63C17/064; A63C17/22; A63C17/226
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
A multi-wheel in-line roller skate, having at least one steerable wheel pivoting about a steering axis, and comprising a frame which can be inclined or tilted laterally with respect to the ground, and a steering mechanism controlling the steering movements of the steerable wheel, and pivotally connected to the frame on a tilting axis which is inclined in relation to the ground surface as defined by the contact points with the wheels, at an angle α where 0 ≦ < π/2, the steerable wheel also being mounted for pivotal movement relative to the frame about a vertical steering axis, and in which both the tilting axis and the steering axis intersect the ground substantially at the point of contact between the steering wheel and the ground.
Claim 2
Dependent Claim
126 words
A multi-wheel in-line roller skate, having at least one steerable wheel pivoting about a steering axis, and comprising a frame which can be inclined or tilted laterally with respect to the ground, and a steering mechanism controlling the steering movements of the steerable wheel, and pivotally connected to the frame on a tilting axis which is inclined in relation to the ground surface as defined by the contact points with the wheels, at an angle α where 0 ≦ < π/2, the steerable wheel also being mounted for pivotal movement relative to the frame about a vertical steering axis, and in which both the tilting axis and the steering axis intersect the ground substantially at the point of contact between the steering wheel and the ground.
Claim 3
Dependent Claim
78 words
A roller skate according to claim 1, in which the steering mechanism includes a connecting piece pivotably connected to the frame about the said tilting axis, and carrying a wheel yoke which is rotatable relative to the connecting piece about the said vertical pivoting steering axis, and carries said steerable wheel, the wheel yoke being additionally connected to the frame by a hinged connection displaced from the said steering axis causing it to pivot about the steering axis.
Claim 4
Dependent Claim
26 words
A roller skate according to claim 1, and a journal bearing which defines the tilting axis and which is located between two wheels of the skate.
Claim 5
Dependent Claim
31 words
A roller skate according to claim 2, and a journal bearing which defines the tilting axis and which is on the side of the steerable wheel remote from the other wheel.
Claim 6
Dependent Claim
76 words
A roller skate according to claim 1, in which the steering mechanism comprises a connecting part having an arcuate guide bearing, the said part being pivotable relative to the frame about the tilting axis, and also pivoted about the steering axis relative to a wheel yoke carrying the steerable wheel, the yoke being connected also to the frame by a hinged connection displaced from the steering axis causing the wheel to pivot about the steering axis.
Claim 7
Dependent Claim
64 words
A roller skate according to claim 1, in which the steering mechanism includes an element having an arcuate guide bearing, lying in the plane perpendicular to the tilting axis, and rigidly attached to a wheel yoke for the steerable wheel, the plane of the bearing forming an arcuate angle with the plane of the ground or the longitudinal plane of symmetry of the skate.
Claim 8
Dependent Claim
28 words
A roller skate according to claim 1, including an adjustable spring between two of the three main parts, namely the frame, the steering element and the wheel yoke.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |